EGTs TOO LOW
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My temp probe is in the exhaust manifold right in front of the #3 cylinder. The banks I was told defuels at 1300-1350 or so. I can run my banks on #6 with no stumble or defueling. I have changed out the guage once already with a new probe because I thought there was something wrong with it. I am just concerned that the truck is not getting the fuel to the injectors that it should. It runs great and there is no stumbles, hesitation I just worry that there is something wrong with it since stacked with the LP on and the BDPP I cant get more than 1000-1100 on a very hot day.
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Joined: Mar 2003
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From: Cleveland, OH
GDH, the bullydog outlook monitor displays rail pressure and fuel pressure. Might want to look into that. It's also known that the back cylinders are hotter, it's possible your proble location isn't as hot as others.
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Lightman, Thanks for the info on Outlook, that would do the trick for me and answer my questions on rail pressures. I was towing last night with the Performance Program from the downloader, Banks set on number 4 and LP on and I was not even over 800. The truck is running great. It is very possible that there are no problems at all and it just runs cool. I have been told the probe is not in the optimal location but shouldnt be more than 50-100 off at the most from anywhere else on the manifold. Thanks
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From: St. Louis
Re: EGTs TOO LOW
Originally posted by gdh11
Can anyone attempt to troubleshoot why EGTs are so low on my truck. A number of folks have told me if they are too cool that I am not getting the fuel. What can be checked on the truck to find out if I am not getting enough fuel to the injectors. I run a FASS, with the BDPP and Banks Six-Gun. I cannot get more than 1000 degrees on the EGT guage even towing. It is almost like the truck is governed. The guage and probe were switched out once before with new ones. Any suggestions?
Can anyone attempt to troubleshoot why EGTs are so low on my truck. A number of folks have told me if they are too cool that I am not getting the fuel. What can be checked on the truck to find out if I am not getting enough fuel to the injectors. I run a FASS, with the BDPP and Banks Six-Gun. I cannot get more than 1000 degrees on the EGT guage even towing. It is almost like the truck is governed. The guage and probe were switched out once before with new ones. Any suggestions?
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From: Boise, Idaho
Get on a dyno and do some runs....that will one of the only ways to see where the mystery defueling is occuring. If you are running that cool with a stock turbo, power must not be where you think it is.
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Joined: Oct 2003
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CA SO so my runs cool to begin with. I have an exhaust and intake mod.
At 70 mph my temp would be around 630 (pre turbo) with the two mods above.
Added an ez and my truck ran around 550 at 70mph. Saw temps of 1100 climbing out of death valley (temps were 115 then) and going at a fast rate (don't remember the mph though).
With BD downloader installed its runs at 530 at 70mph but I only had this for several weeks.
I have an xmonitor for a gauge.
At 70 mph my temp would be around 630 (pre turbo) with the two mods above.
Added an ez and my truck ran around 550 at 70mph. Saw temps of 1100 climbing out of death valley (temps were 115 then) and going at a fast rate (don't remember the mph though).
With BD downloader installed its runs at 530 at 70mph but I only had this for several weeks.
I have an xmonitor for a gauge.
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530 at 70MPH??!! That is really low but I have been told the HOs were hotter and the 600s are even hotter than the HOs. Cruising on the highway even towing 7K I still am not over 600-650 with the Performance program from the downloader and #4 on the Banks.
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Joined: Aug 2002
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From: Northern Virginia
gdh11, I think we have both just come up w/ a good combo of mods for our particular trucks. I have my probe mounted in front of the number 4 cylinder and I figure that it may be 100 degrees cooler than the back 2 cylinders. It's still not bad.
Just because ours run cooler than some of the others here, doesn't mean our trucks are wrong! Maybe those guys with hot trucks should look at what we've done and try to do the same..
Just because ours run cooler than some of the others here, doesn't mean our trucks are wrong! Maybe those guys with hot trucks should look at what we've done and try to do the same..
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You may be right but I really want to get this on a dyno and on the track to look at the real numbers. That will really tell me what I need to do if anything. I get the feeling it will be time for a turbo and injectors soon but the turbo will have to be first. It seems to be making some noises that it didn't used to make.
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Joined: Mar 2003
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From: the shop
gdh
Ive been wondering about the same thing
Ive had a tst on 3/2 could never get over 1100
banks on 6 w speed loader couldnt get over 1000
now running without anything ,temps are the same
both set ups had loads of power, even more than I could use at times, and never getting hot
I just wonder if these dipricol egt gauges are accurate
im at 550 cruising down the highway empty
to me it seams way low for the power ive put out (feels better than my 02 with pm3 and dd2's)
my boost was 28 psi max with the banks
and would shoot past 34 briefly with the tst then settle on 32
Ive been wondering about the same thing
Ive had a tst on 3/2 could never get over 1100
banks on 6 w speed loader couldnt get over 1000
now running without anything ,temps are the same
both set ups had loads of power, even more than I could use at times, and never getting hot
I just wonder if these dipricol egt gauges are accurate
im at 550 cruising down the highway empty
to me it seams way low for the power ive put out (feels better than my 02 with pm3 and dd2's)
my boost was 28 psi max with the banks
and would shoot past 34 briefly with the tst then settle on 32
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From: Northern Virginia
My boost hits a wall at 30 psi and that's with the boost elbow. My guage is a Westach and is fairly new so I think it is accurate. It sounds like a bunch of us are worried for nothing.......
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On my 01, before I put the comp on, I could hit 1250 pre turbo. After I put the comp on, I could barely crack 1000 going uphill at 100 mph. I had a BHAF and 4" straight pipe both times. Boost went from 19 to 35. My roommates 01 HO did the same thing. I think yall are ok.